File-binder.



PATEN'I'ED'FEBQZZ 1906. 4

G. R. NELSON. FILE BINDER. APPLICATION FILED AUG. 1, 1903.

lmre'nhn'. Charles R A eZson. m

UNITED STATES PATENT oEEIoE.

CHARLES R. NELSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO SIEBER &

TRUSSELL MANUFACTURING COMPANY, A CORPORATION OF MIS- SOURI.

FILE-BINDER.

Specification of Letters Patent.

Patented Feb. 27, 1906.

To all whom it may concern:

Be it known that I, CHARLES R. NELsoN, a citizen of the United States,and a resident of Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in File-Binders, of whichthe following is a specification and which are illustrated in theaccompanying drawings, form ing a part thereof.

This invention relates to permanent binders for looseleaves of thattypeinwhich apair of vertical posts are set in a base-plate, the sheetsor leaves to be bound being apertured to engage the posts and a pressureand binding plate being applied above the sheets and locked to theposts.

The invention consists in novel means for locking the pressure andbinding plate to the vertical posts, as hereinafter described, and asillustrated in the accompanying drawings, in which Figure 1 is a detailperspective of the device, the cover-platefor the locking mechanismbeing removed. Fig. 2 is a plan view of the binding device not in use.Fig. 3 is a plan view of the same with the cap-plate removed. Fig. 4 isa longitudinal central section on the line 4 4 of Fig. 2, the partsbeing shown in the position in which they are represented in Fig. 3.Fig. 5 is a detail end elevation. Fig. 6 is a perspective of the keyused for controlling the locking mechanism, and Fig. 7 shows a modifiedform of the binding-plate.

The base-plate 10 is shown as being in the form of a strip, preferablyof metal, of a length as great as or greater than the width of thesheets X to be secured. A pair of vertical posts 11 12 are rigidly fixedto the plate 10. A binding-plate 13, apertured to receive the posts 11and 12 and to run loosely thereupon, is of substantially the same formas the plate 10. A binding-plate l4 rests upon the plate 13 and is insliding engagement therewith, being secured by means of a T- stud 15,the shank of which projects through an elongated aperture in the plate14. This latter plate is apertured, as shown at 22 24, to receive theposts 11 and 12, the centers of the apertures, however, being slightlycloser together than the centers of the posts. The plate 14 iscontrolled by a screw-bolt 16, in threaded engagement with the block17,fiXed to the plate 13 the bolt having its outer end squared, as shownat 18, for the engagement of a socketed key 19 and being in swiveledengagement with an upturned flange 20 of the plate 14. Thisbinding-plate is split at its opposite end, as shown at 21, through tothe aperture 22 and is preferably recessed at its opposite sides, asshown at 23 23, opposite such aperture, so that as the plate is drawn bythe screw 16 until the side wall of the aperture 22 engages the post 11the two end pieces, separated by the split 21, are forced apart, closingtogether, however, by reason of the resiliency of the metal upon themovement of the plate in the opposite direction.

The aperture 24 is so disposed relatively to the aperture 22 that itsside wall does not engage the post 12 until after the engagement of theside wall of the aperture 22 with the post 1 1 and the split end of theplate has been widened as described. By this means the plate 1.4 iscaused to bite into both posts, even though the latter may be somewhatout of true either because of defective construction or because theyhave become bent in use.

In actual practice devices of this kind may be subjected to rathersevere usage, and the posts, not being stayed, are liable to be bent,rendering the locking device inoperative or inefficient. This difiicultyis entirely avoided by the construction shown and described.

The binding-plate may be split longitudinally a short distance from bothof its apertures, as shown at 26 and 27 in Fig. 7, thereby rendering itlaterally eXpansible by contact with both posts and increasing theavailable range of movement. This construction, however, I do not claimspecifically in this application, as I have more fully described andclaimed the same in a copending application, Serial No. 248,124, whichis a division of this one.

At 25 is shown a cover-plate for inclosing the locking mechanism, suchplate being apertured to accommodate the posts 11 and 12.

I claim as my invention 1. In a loose-leaf binder, in combination, abase-plate, a pair of posts set therein, a pressure-plate running on theposts, a bindingplate apertured to fit upon the posts and being inslidable engagement with the pressureplate, the distance between one ofthe apertures and the remoter side of the other aperture differing fromthe distance between the posts correspondingly measured the bindingplatebeing elastic at one of its apertures.

2. In a loose-leaf binder, in combination, a base-plate, a plurality ofposts rising therefrom, a pressure-plate running on the posts, abinding-plate in sliding engagement with the pressure-plate andapertured to fit loosely on the posts and being expansible at one of itsapertures and non-eXpansible at the other aperture, and means forshifting the binding plate laterally as to the posts.

3. In a loose-leaf binder, in combination, a base-plate, a plurality ofposts rising therefrom, a pressure-plate running on the posts, abinding-plate in sliding engagement with the pressure-plate and havingan aperture for loosely receiving each post and being eX- pansible atone of its apertures and non-expansible at the other aperture, a blocksecured to the pressure-plate and having a thread ed aperture, and ascrew engaging such aperture and in swiveled engagement with thebinding-plate.

4. In a loose-leaf binder, in combination, a

base-plate, a pair of posts rising therefrom, an

apertured pressure-plate running on the posts,

a binding-plate slidingly en a ing the pressure-plate and apertured to tloosely on the posts, the centers of its apertures being closer togetherthan the centers of the posts, such last-named plate being split fromone end to the adjacent aperture, and means for sliding such platelaterally as to the posts.

5. In a loose-leaf binder, in combination, a base-plate, a pair of postsset therein, a pressure-plate running on the posts, a bindingplateapertured to fit upon the posts and being in slidable engagement withthe pressureplate, one of the apertures in the bindingplate being ofless width at one end than the diameter of the post with which itcooperates and the plate being resiliently expansible at such aperture,and means for adjustably shifting the binding-plate in one direction toengage it with both posts.

CHARLES R. NELSON.

Witnesses:

LoUIs K. GrLLsoN, E. M. KLATGHER.

